Mihajlo Pupin
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Mihajlo Idvorski Pupin, also known as Michael Pupin, was a Serbian-American electrical engineer, physicist and inventor.
Pupin, c. 1890
Pupin's birthplace
Pupin c. 1935
First meeting of the NACA in 1915 (Pupin seated first from right)
Hermann von Helmholtz
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Hermann Ludwig Ferdinand von Helmholtz was a German physicist and physician who made significant contributions in several scientific fields, particularly hydrodynamic stability. The Helmholtz Associat
Mihajlo Pupin
…where he continued his schooling supervised by John Tyndall at the University of Cambridge. He obtained his Ph.D. at the University of Berlin under Hermann von Helmholtz with a dissertation titled "Osmotic Pressure and its Relation to Free Energy". In 1889 Pupin returned to Columbia University, where he was offered a…
Hermann von Helmholtz
Helmholtz's polyphonic siren, Hunterian Museum, Glasgow
Helmholtz in 1848
1889 copy of Helmholtz's "Über die Erhaltung der Kraft", no. 1